IMECH-IR  > 非线性力学国家重点实验室
Multi-flexible fiber flows: A direct-forcing immersed boundary lattice-Boltzmann lattice-spring approach
Tang YH; Wu TH; He GW(何国威); Qi DW
Source PublicationINTERNATIONAL JOURNAL OF MULTIPHASE FLOW
2018-02-01
Volume99Pages:408-422
ISSN0301-9322
AbstractWe demonstrate that a lattice-Boltzmann lattice-spring method can be used to simulate a dynamic behavior of a suspension of a large number of flexible fibers in finite Reynolds number flows. In the method, lattice-Boltzmann equation is adopted to simulate fluid velocity and vorticity while lattice-spring model with three-body forces can be employed to model the bending deformation of solid bodies. In order to realize the non-slip boundary condition, a forcing term is simply calculated by using the Newtonian second law and imposed with an immersed boundary scheme. The method is validated by comparing the present results with experiments and existing theories and methods. Subsequently, the method is applied to simulate a dynamic process of flexible fibers settling on a static or moving screen/wire net while a fiber mat is simultaneously built over the screen and resists fluid flowing. The number of fibers, fiber density and flexibility, and ratio of the relative velocity of the screen/wire to fluid can be systematically varied at different levels. Their influences on drainage rate are computed and evaluated. (C) 2017 Elsevier Ltd. All rights reserved.
KeywordLattice Boltzmann equation Lattice spring model Flexible fibers Fiber network Drainage rate Immersed boundary method Rigidity Flexibility
DOI10.1016/j.ijmultiphaseflow.2017.11.008
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000424316600028
WOS KeywordDIRECT NUMERICAL-SIMULATION ; REYNOLDS-NUMBER FLOWS ; PARTICULATE FLOWS ; ELASTIC PARTICLES ; DOMAIN METHOD ; SUSPENSIONS ; EQUATION ; SEDIMENTATION ; SPHEROIDS ; RHEOLOGY
WOS Research AreaMechanics
WOS SubjectMechanics
Funding OrganizationNational Science Foundation of USA [1126438] ; National Natural Science Foundation of China (NNSFC) [11232011] ; National Basic Research Program of China (973 Program) [201303834100]
Classification二类/Q1
Ranking3
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77885
Collection非线性力学国家重点实验室
Affiliation1.[Tang, Yihsin
2.Wu, Tai-Hsien
3.Western Michigan Univ, Dept Chem & Paper Engn, Kalamazoo, MI 49009 USA
4.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Tang YH,Wu TH,He GW,et al. Multi-flexible fiber flows: A direct-forcing immersed boundary lattice-Boltzmann lattice-spring approach[J]. INTERNATIONAL JOURNAL OF MULTIPHASE FLOW,2018,99:408-422.
APA Tang YH,Wu TH,何国威,&Qi DW.(2018).Multi-flexible fiber flows: A direct-forcing immersed boundary lattice-Boltzmann lattice-spring approach.INTERNATIONAL JOURNAL OF MULTIPHASE FLOW,99,408-422.
MLA Tang YH,et al."Multi-flexible fiber flows: A direct-forcing immersed boundary lattice-Boltzmann lattice-spring approach".INTERNATIONAL JOURNAL OF MULTIPHASE FLOW 99(2018):408-422.
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